Amino Acid Structures - HyperPhysics Concepts

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Amino Acids with Hydrocarbon R-groups

Amino acids are organic compounds which contain both an amino group and a carboxyl group. They are distinguished by the attached functional group R.

Of the twenty amino acids that make up proteins, six of them have hydrocarbon R-groups . Except for phenylalanine, these are aliphatic hydrocarbons, containing no benzine ring. The simplest of the amino acids, glycine, has just a hydrogen atom in the position of the R-group.

R-group
Hydrocarbon
Neutral
Acid or base
Click on any amino acid for further details.

* Amino acids which are essential amino acids which cannot be made by the human body and, therefore, must be obtained in the diet.

Amino acids may be characterized in various ways. Important to the structure of proteins is whether they are hydrophobic or hydrophilic. These amino acids are for the most part hydrophobic. For details about the ways to classify amino acids, see the IMGT classes for amino acids.

IndexBiochemical conceptsChemistry conceptsReferenceTillery, Enger and RossCh 14
HyperPhysics*****Chemistry R Nave
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Amino Acids with Neutral R-groups

Amino acids are organic compounds which contain both an amino group and a carboxyl group. They are distinguished by the attached functional group R.

Of the twenty amino acids that make up proteins, seven of them have neutral R-groups :

R-group
Hydrocarbon
Neutral
Acid or base
Click on any amino acid for further details.

* Amino acids which are essential amino acids which cannot be made by the human body and, therefore, must be obtained in the diet.

Amino acids may be characterized in various ways. Important to the structure of proteins is whether they are hydrophobic or hydrophilic. These amino acids are for the most part hydrophilic. For details about the ways to classify amino acids, see the IMGT classes for amino acids.

IndexBiochemical conceptsChemistry conceptsReferenceTillery, Enger and RossCh 14
HyperPhysics*****Chemistry R Nave
 Go Back
Amino Acids with Acid or Base R-groups

Amino acids are organic compounds which contain both an amino group and a carboxyl group. They are distinguished by the attached functional group R.

Of the twenty amino acids that make up proteins, six of them have acid or base R-groups . Compare with the simplest of the amino acids, glycine, which has only H as an R-group.

R-group
Hydrocarbon
Neutral
Acid or base
Click on any amino acid for further details.

* Amino acids which are essential amino acids which cannot be made by the human body and, therefore, must be obtained in the diet.

Amino acids may be characterized in various ways. Important to the structure of proteins is whether they are hydrophobic or hydrophilic. These amino acids are for the most part hydrophilic. For details about the ways to classify amino acids, see the IMGT classes for amino acids.

IndexBiochemical conceptsChemistry conceptsReferenceTillery, Enger and RossCh 14
HyperPhysics*****Chemistry R Nave
 Go Back

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